Different properties of the complexes Me Y formed between the trivalent lanthanides and HEDTA have been studied: the solubilities at 20°C and 100°C, the degree of hydration and the temperature of dehydration. Extremely high solubility of certain complexes and other unexpected properties at high ...
XXVI—Constantes de couplage et hétérogénéités conformationnelles dans une série de R-3 et R-5 cyano-4 cyclohexènes deutériés (R=méthyl ou t-butyl). Org. Magn. Reson., 9: 253–259. doi: 10.1002/mrc.1270090504 Author Information Laboratoire de Chimie Organique Structurale (associé...
The authors describe a case of acute bilateral retinal necrosis. The patient was a 70-year-old man. The more severely damaged eye was enucleated and, by means of electron microscopy, numerous virus particles were found in the necrotic tissue. Immunocytochemical similarities with Cytomegalovirus (CMV...
The quantitative importance (several ppm) of the effect of solute–solvent van der Waals' interactions on the13C chemical shift is shown for a non polar solute,n-pentane, in solution in 17 solvents and in the gas phase. The van der Waals screening constant term is discussed in respect to...
We present the realization of a multiwavelength laser system which exploits the achromaticity of micro-mirrors for the generation of tunable radiations in the visible spectre. Finally, we study the development of tunable multipole reject band fi...
On compare les valeurs calculées à une série de grandeurs expérimentales: spectres uv, déplacements chimiques 13 C, constantes de couplage J HH et stabilité relative des quatre isomères. The molecular structures of the three Meyer isomers [3-methyl-3-(5′-amino-3′-methyl-l-pyrazolyl...
A General Synthesis for Mono- C -Functionalized Tetrazamacrocycles A new synthesis, under usual conditions of concentration, medium, and temperature, of a series of mono- C -functionalized tetraazamacrocycles is given. The method may easily be generalized. The new procedure allows the modification ...
Flatt, RInstitut de chimie minérale et analytique de l'Université de LausanneBrunisholz, GInstitut de chimie minérale et analytique de l'Université de LausanneMerbach, AInstitut de chimie minérale et analytique de l'Université de LausanneWILEY‐VCH Verlag GmbHHelvetica Chimica Acta...
The increasing participation of community organizations in the delivery of public services highlights the importance of cross-jurisdictional cooperation and partnerships within the framework of a more horizontal governance. The article presents some of the challenges surrounding governance construction in the ...
Pyrano [2, 3-c] pyrazole-3 (2H)-ones easily add aliphatic amines on the 6 position: the reaction is reversible. By prolonged heating and with primary amines only, the formation of alkylaminoethylidenepyrazolidin-3, 5-diones is observed....